Intelligent electromagnetic flowmeter manufacturers

Electromagnetic flowmeter is I am using the most advanced technology research, development and production of all intelligent flow meter one, compared with the old electromagnetic flow meter, high accuracy, reliability, stability, full, long life and so on. It can measure conductive liquid medium in closed conduits, including acids, alkalis, rock salt and other corrosive liquids, mud, sewage and solid-liquid two suspension volume flow. Structure electromagnetic flowmeter mainly from the magnetic system, measuring catheter electrode, shell, lining and converters and other parts. Electromagnetic flowmeter Figure magnetic system: its role is DC or AC magnetic field to produce uniform. DC magnetic circuit with the permanent magnet to achieve the advantage of a relatively simple structure, a small alternating magnetic field by interference, but it is easy to make by measuring the polarization of the liquid electrolyte within the conduit, the positive electrode being surrounded by negative ions, positive ions by the negative electrode surround, namely the electrode polarization and lead to increased resistance between the two electrodes, thereby seriously affecting the normal operation of the instrument. When large diameter pipes, the permanent magnet is correspondingly large, cumbersome and uneconomical, so electromagnetic flowmeters generally use an alternating magnetic field, and is 50HZ power frequency excitations. Measuring catheter: its role is to be measured by the conductive liquid. In order to make the magnetic field lines of magnetic flux through the measuring conduit is diverted or short, measuring catheter must be non-magnetic, low electrical conductivity, low thermal conductivity and mechanical strength of the material has a certain made, the choice of non-magnetic stainless steel, glass, steel, high strength plastic and aluminum. Electrode: its role is to be measured is proportional to the lead and EMF signal. Electrodes are generally made of non-magnetic stainless steel, and are asked to flush the liner to the fluid through unhindered. Its mounting position in the vertical direction of the pipe should be, to prevent the precipitate deposited thereon and affect measurement accuracy. Housing: made of ferromagnetic material application, it is the exciting coil housing allocation system, and isolate the interference of external magnetic field. Lining: measuring catheter inside and flange sealing surface, a layer of electrically insulating liner intact. It is in direct contact with the measured liquid, its role is to increase the corrosion resistance of measuring pipe to prevent induction potential is measured short circuit metal conduit wall. Lining material more resistant to corrosion, high temperature, wear-resistant PTFE plastic, ceramics. Converter: EMF signal generated by the liquid flow is very weak, a great influence of interference by various factors, the effect of the converter is to EMF signal is amplified and converted into a unified standard signal and suppress interfering signals primarily. Its task is to detect the electrode potential of the signal induced by the amplified and converted into a unified Ex standard DC signal.